Home / 20,207,876.20-30,311,814.30-12,145,719.40

Finding the Fourth Proportional to 20,207,876.20, 30,311,814.30 and 12,145,719.40

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Solution

The fourth proportional to 20,207,876.20, 30,311,814.30 and 12,145,719.40 is: 18,218,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207,876.20 : 30,311,814.30 = 12,145,719.40 : x
  2. Step 2: Convert to fraction form
    20,207,876.20/30,311,814.30 = 12,145,719.40/x
  3. Step 3: Cross multiply
    20,207,876.20x = 30,311,814.30 × 12,145,719.40
  4. Step 4: Simplify right side
    20,207,876.20x = 368,158,790,992,707.44
  5. Step 5: Solve for x
    x = 368,158,790,992,707.44/20,207,876.20
  6. Step 6: Final answer
    x = 18,218,579.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.